Process of producing paper or paper-board and the like



UNITED STATES PATENT torsion CHARLES E. NELSON, OF OAPAC, MICHIGAN, ASSIGNOR TO EDWARD P. METGALF, OF PROVL- DENGE, RHODE ISLAND, AND ADOLPH LOEWENTHAL AND CLIFFORD E. DUNN, TRUSTEES,

. OF NEW YORK, N. Y.

PROCESS OF PRODUCING PAPER OR PAPER-BOARD AND LIKE Specification of Letters Patent.

Patented. Feb. 25,1908.

Application filed February 23. 1907- Serial No. 358.774.

To all whom it may concern:

Be it known that I, CHARLES E. NELSON,

.a citizen of the United States, residing in Capac, county of St. Clair, and State of Michigan, have invented certain new and useful Improvements in Processes of Producing Paper or Paper-Board and the Like,

of which the following is a full, clear, and

stance half-stuff exact specification.

This invention relates to a process of forming paper or board and the like from halfstufi' containing peat fibers and the natural described and c'lalmed in U. 5. Patent No. 836,069 granted November 13, 1906 on'an application of Christian. Esser, may be used,

although the present invention is not to be confined to the use of the particular halfstuii of theabove patent, but may be employed with half-stufi' containing peat fibers and the non-coagulated natural gelatinous matter of the peat, however produced.

' invention, the half-stuff containing peat fibers and gelatinous matter is supplied With -a sufficient quantity of Water or otherliquid to float it, and is carried to the stuffchest. From the stud chest, the floated matter is conducted through the. necessary screens to themachine cylinder tanks where the oper- .ation of converting it into paper, or board and the like is started. Prior to the actual.

operation of making the half-stuff into paper board and the like, the fibers and gelatinous matter are subjected to the action of heat. of such temperature that the gelatinous matter is softened sufiiciently to destroy reduced in the manner lumps which it may contain. This softening of the gelatinous matter by the action of heat brings it into a fluidic or soluble condition and causes it to be evenly and midformly distributed among the peat fibers. Furthermore, by distributingthe gelatinous matter uniformly among the peatfibers' it will be obvious that the gelatinous matter will also be uniformly distributed througliout the paper board and the like when manu-.

factured and will thus serve to render the finished product uniformly water-repellent and strong. The heating of the half-stuff prior to the operation of making it into paper board and the like, preferably is effected in the machine cylinder tanks, although if desired the heating may take place in the stud chest.

In subjecting the gelatinous matter to the action of heat of such temperature that said matter will be softened sufficiently to destroy any lumps which it may contain, it must be borne in mind that the temperature must not be sufficient to cause coagulationof said' gelatinous matter, Which Is album1v nous in its nature.

After the floated half-stuff has been sufiiciently heated .to reduce any lumps in the gelatinous matter and to distribute the same evenly among the peat fibers, both the fibers and a comparatively largeamount of the gelatinous matter are run into paper or board and the like.

It Will be apparent from the above, that the finished product ofithe process contains peat fibers, together with a quantity of the gelatinous matter of peat, which latter acts as a binder for the fibers.

If desired the half-stuff containing peat fibers and the naturalgelatinous matter of the peat may have mixedtherewith a small percentage of'sulfid' or other hard stock. The board producedvaccording to the resent process possesses the desirable qua ities of strength and durability and in addition is moth and vermin-proof, furthermore it is damp-repellent even if unsized, and is also a non-conductor of electricityand an excellent insulating material.

The herein-described method of producin paper or board and the like from half-stu containing peat fibers and the natural gelatinous. matter of the peat by floatingand heating the fibersand gelatinogs matteigpfi;

the peat and then running both the fibers and elatinous matter into aper board and the lie may be Varied widel eonsideration of maintaining a comparatively large quantity of gelatinous matter in connection With the peat fibers be kept in View.

What is. claimed is- 1. A process of producin paper or board and the like from half-stuil containing peat fibers and the natural gelatinous matter of the peat, which processconsists in heating the gelatinous matter insufficiently to coagulate the same, and running said gelatinous matter and the peat fibers into paper or board and the like. I

2. A process of aroducing paper or board and the-like from lialf-stutfcontaining peat fibers and the natural gelatinous matter of the post," which process consists in floating and heating the peat fibers and gelatinous providing the matter insufficiently to coagulate said gelatinous matter, and then running said fibers and gelatinous matter into paper or board and the like.

3. A process of producing paper-or board and theli ke from half-stuff containing peat.

fibers arid the natural gelatinous matter of the eat, which process consists in heating the half-stuff to a temperature insufficient to coagulate the elatinous matter, and then running the sai half-stufi into paper or boardand the like.

In testimony whereof, I have hereunto set my hand in the presence of two subscribing Witnesses.

CLEMENT F. SIssoN,

O. A.- PREY. 

